Not enough hands and money ,we had great difficulty in compeling the project on schedule.A hadB havingC to haveD have

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Not enough hands and money ,we had great difficulty in compeling the project on schedule.
A had
B having
C to have
D have

动词原型不能做主语.

首先 看见逗号就可以排除A和D了 因为一句话只能有一个动词 后边有了
其次 句首要用动名词 NOT可以忽略不看的

这样说通俗易懂 希望你能明白